Recent Comet Brightness Estimates

2P/Encke
Total-magnitude and coma-diameter estimates:
2017 Jul. 27.13, 16.2, 0.2' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 24.59, 17.6, 0.4' (R. Dymock, Warrumbungle, New South Wales, Australia, 0.51-m Cassegrain reflector)

29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates:
2017 Aug. 19.46, 13.9, 0.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 16.91, 13.4, 1.2' (P. Guzik, 0.326-m Newtonian reflector)
2017 Aug. 15.97, 13.4, 1.1' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 14.45, 13.9, 1.1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 01.98, 13.3, 1.2' (P. Guzik, 0.326-m Newtonian reflector)
2017 Aug. 01.79, 14.0, 0.8' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 01.73, 13.4, 1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 30.78, 14.3, 0.7' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.57, 14.0, 1' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.01, 12.4, 2.7' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 26.01, 12.7, 2.5' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 25.76, 13.2, 1.2' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 25.21, 12.8, 2.5' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 24.74, 13.6, 0.7' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.58, 14.0, 1' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.15, 12.6, 2.8' (K. Hills, 0.5-m Newtonian reflector)

41P/Tuttle-Giacobini-Kresak
Total-magnitude and coma-diameter estimates:
2017 Aug. 15.85, 13.6, 2.1' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 13.86, 13.8, 1' (J. Cerny, 0.355-m Newtonian reflector)
2017 Jul. 30.01, 14.4, 0.4' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 24.59, 13.9, 1.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.59, 15.2, 0.9' (R. Dymock, Warrumbungle, New South Wales, Australia, 0.51-m Cassegrain reflector)

47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.23, 16.5, 0.3' (K. Hills, 0.5-m Newtonian reflector)

53P/Van Biesbroeck
Total-magnitude and coma-diameter estimates:
2017 Jul. 31.22, 17.8, 0.2' (K. Hills, 0.5-m Newtonian reflector)

65P/Gunn
Total-magnitude and coma-diameter estimates:
2017 Jul. 27.55, 14.2, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.52, 14.2, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)

71P/Clark
Total-magnitude and coma-diameter estimates:
2017 Aug. 23.04, 11.1, 2' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 19.44, 11.8, 2.1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.42, 11.9, 2' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 14.44, 12.0, 1.6' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 12.86, 11.4, 1.5' (C. Labordena, La Serra, 0.2-m Schmidt-Cassegrain)
2017 Aug. 12.40, 12.0, 1.6' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 11.44, 11.5, 2.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 10.99, 10.9, 2' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 10.45, 11.8, 1.2' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.55, 10.8, 1.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 26.08, 10.6, 3' (M. Goiato, 0.22-m Newtonian reflector)
2017 Jul. 25.43, 10.9, 3.2' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.51, 10.9, 1.5' (P. Camilleri, 0.406-m Newtonian reflector)

73P-BT/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates:
2017 Aug. 04.12, 16.4, 0.3' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 31.15, 15.9, 0.3' (K. Hills, 0.5-m Newtonian reflector)

90P/Gehrels
Total-magnitude and coma-diameter estimates:
2017 Aug. 06.22, 17.0, 0.3' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 30.18, 16.9, 0.2' (K. Hills, 0.5-m Newtonian reflector)

95P/Chiron
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.08, 18.0, 0.2' (K. Hills, 0.5-m Newtonian reflector)

145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.14, 15.1, 0.4' (K. Hills, 0.5-m Newtonian reflector)

174P/Echeclus
Total-magnitude and coma-diameter estimates:
2017 Jul. 26.22, 17.8, 0.2' (K. Hills, 0.5-m Newtonian reflector)

213P/Van Ness
Total-magnitude and coma-diameter estimates:
2017 Aug. 16.90, 13.3, 0.8' (P. Guzik, 0.326-m Newtonian reflector)
2017 Aug. 15.89, 13.5, 1.1' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 14.46, 13.5, 0.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 13.47, 14.0, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 11.46, 13.9, 0.4' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 10.46, 13.7, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.56, 13.8, 0.6' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.53, 13.5, 0.6' (P. Camilleri, 0.406-m Newtonian reflector)

217P/LINEAR
Total-magnitude and coma-diameter estimates:
2017 Aug. 19.74, 12.8, 1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 05.45, [10.5, 1' (C. Hergenrother, 30x125 binoculars)
2017 Aug. 05.18, 11.1, 1.1' (K. Hills, 0.5-m Newtonian reflector)
2017 Aug. 01.82, 12.0, 1.8' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 01.76, 12.6, 1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 01.08, 12.5, 0.5' (W. Hasubick, 0.44-m Newtonian reflector)
2017 Jul. 30.81, 12.0, 2' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.80, 12.1, 1.8' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 25.79, 12.2, 1.4' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.81, 12.0, 2' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.78, 12.1, 2.5' (C. Wyatt, 0.25-m Newtonian reflector)

352P/Skiff
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.16, 16.2, 0.3' (K. Hills, 0.5-m Newtonian reflector)

C/2010 U3 (Boattini)
Total-magnitude and coma-diameter estimates:
2017 Aug. 04.21, 16.3, 0.3' (K. Hills, 0.5-m Newtonian reflector)

C/2011 KP36 (Spacewatch)
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.17, 14.5, 0.6' (K. Hills, 0.5-m Newtonian reflector)

C/2014 W2 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Jul. 26.90, 15.9, 0.2' (K. Hills, 0.5-m Newtonian reflector)

C/2015 ER61 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Aug. 22.18, 12.1, 0.57' (N. Paul, Canary Island, Teide G40, 0.5-m Cassegrain reflector)
2017 Aug. 19.72, 12.5, 1.5' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.69, 12.1, 1.2' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.02, 10.2, 3.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain)
2017 Aug. 12.77, 10.7, 1.5' (S. Yoshida, 0.4-m Newtonian reflector)
2017 Aug. 04.11, 11.5, 1.4' (K. Hills, 0.5-m Newtonian reflector)
2017 Aug. 03.05, 11.1, 2' (M. Kwinta, Krakow, 0.185-m Newtonian reflector)
2017 Aug. 02.06, 11.6, 2.3' (M. Paradowski, Lublin, Poland, 0.15-m Newtonian reflector; 0.23-deg tail in p.a. 268)
2017 Aug. 02.05, 11.6, 2.5' (M. Paradowski, Lublin, Poland, 0.15-m Newtonian reflector; 0.26-deg tail in p.a. 265)
2017 Aug. 02.01, 11.5, 2' (P. Guzik, 0.326-m Newtonian reflector)
2017 Aug. 01.83, 11.5, 3' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 01.81, 10.7, 9' (T. Lehmann, 0.4-m Newtonian reflector; 0.5-deg tail in p.a. 266)
2017 Aug. 01.75, 11.6, 3.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 30.82, 11.5, 2' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 30.44, 10.7, 11' (T. Lehmann, 0.106-m refractor; 0.6-deg tail in p.a. 265)
2017 Jul. 30.13, 11.2, 1.8' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 30.10, 11.7, 2.5' (C. Labordena, La Llacua, 0.2-m Schmidt-Cassegrain)
2017 Jul. 30.05, 10.5, -- (U. Pilz, 16x70 binoculars)
2017 Jul. 27.81, 11.5, 3' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 25.78, 11.2, 3' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.82, 11.5, 1.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.81, 10.3, 12' (T. Lehmann, 0.4-m Newtonian reflector; 0.5-deg tail in p.a. 264)
2017 Jul. 24.77, 11.2, 2.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.17, 10.9, 3' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 24.04, 11.0, 2' (M. Kwinta, Krakow, 0.185-m Newtonian reflector)

C/2015 O1 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Aug. 14.83, 14.4, 0.9' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 14.47, 14.1, 0.4' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 13.83, 14.7, 0.7' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 13.46, 13.8, 0.7' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 11.45, 13.7, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 10.47, 13.9, 0.6' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 10.38, 14.3, 0.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 09.97, 15.2, 0.38' (D. Buczynski, Tarbatness MPC Code I81, 0.35-m Schmidt-Cassegrain)
2017 Jul. 27.53, 13.7, 0.8' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 26.96, 15.2, -- (D. Buczynski, I81 tarbatness, 0.35-m Schmidt-Cassegrain)
2017 Jul. 24.50, 14.2, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)

C/2015 V1 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.09, 15.1, 0.4' (K. Hills, 0.5-m Newtonian reflector)

C/2015 V2 (Johnson)
Total-magnitude and coma-diameter estimates:
2017 Aug. 22.04, 9.7, 4' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 19.42, 10.5, 3.5' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.41, 10.1, 3.2' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 15.38, 10.0, 1.3' (N. Paul, Siding Spring - Australia - MPC Q62, 0.431-m Cassegrain reflector)
2017 Aug. 14.48, 10.0, 3' (P. Camilleri, 12x80 binoculars)
2017 Aug. 14.43, 10.1, 4.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 13.45, 10.0, 3' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 12.39, 9.9, 4.5' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 11.43, 10.0, 3' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 11.26, 10.0, 4' (M. Linnolt, Volcano, Hawaii, 20x60 binoculars)
2017 Aug. 10.97, 9.2, 6' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 10.44, 10.1, 2' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 10.36, 9.8, 3' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 02.88, 9.4, 5.7' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 28.52, 8.6, 20' (T. Lehmann, 0.106-m refractor; 0.35-deg tail in p.a. 17)
2017 Jul. 27.52, 8.9, 8' (P. Camilleri, 20x80 binoculars)
2017 Jul. 26.54, 9.0, 6' (P. Camilleri, 20x80 binoculars)
2017 Jul. 26.06, 8.5, 7' (M. Goiato, 20x100 binoculars)
2017 Jul. 25.42, 9.6, 4' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.95, 9.3, 2' (A. Amorim, 0.18-m Newtonian reflector)
2017 Jul. 24.48, 8.9, 7' (P. Camilleri, 0.08-m refractor)

C/2015 VL62
Total-magnitude and coma-diameter estimates:
2017 Aug. 22.14, 12.9, 2' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 19.46, 13.7, 1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.68, 13.7, 0.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 16.94, 12.3, 1.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain)
2017 Aug. 14.47, 13.6, 1' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 13.87, 14.4, 0.5' (J. Cerny, 0.355-m Newtonian reflector)
2017 Aug. 01.80, 13.8, 0.7' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Aug. 01.74, 13.8, 0.8' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 31.01, 13.7, 1.4' (M. Paradowski, Lublin, Poland, 0.15-m Newtonian reflector)
2017 Jul. 30.98, 14.2, 1.4' (M. Paradowski, Lublin, Poland, 0.15-m Newtonian reflector)
2017 Jul. 30.79, 13.8, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.78, 13.5, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.15, 13.7, 1.2' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 25.76, 13.6, 0.9' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.79, 14.2, 0.5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 24.75, 13.8, -- (G. van Buitenen, Siding Spring, MPC Q62, 0.43-m Ritchey-Chretien)
2017 Jul. 24.73, 14.2, 0.6' (C. Wyatt, 0.25-m Newtonian reflector)

C/2016 M1 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Aug. 09.99, 15.9, 0.38' (D. Buczynski, Tarbatness MPC Code I81, 0.35-m Schmidt-Cassegrain)
2017 Jul. 30.06, 14.6, 0.6' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 29.92, 15.3, 1' (T. Lehmann, 0.2-m Newtonian reflector)
2017 Jul. 26.97, 15.9, -- (D. Buczynski, I81 tarbatness, 0.35-m Schmidt-Cassegrain)
2017 Jul. 25.88, 16.0, 0.18' (N. James, 0.28-m Schmidt-Cassegrain)

C/2016 N4 (MASTER)
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.11, 15.9, 0.4' (K. Hills, 0.5-m Newtonian reflector)

C/2016 N6 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Jul. 26.99, 16.1, -- (D. Buczynski, I81 tarbatness, 0.35-m Schmidt-Cassegrain)

C/2016 R2 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Aug. 08.76, 14.7, 0.6' (R. Ramlow, 0.7-m Newtonian reflector; 35.0" tail in p.a. 213)
2017 Jul. 28.80, 14.0, 3.5' (T. Lehmann, 0.4-m Newtonian reflector; 0.05-deg tail in p.a. 223)
2017 Jul. 24.81, 14.0, -- (G. van Buitenen, Siding Spring, MPC Q62, 0.43-m Ritchey-Chretien)

C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates:
2017 Jul. 25.91, 18.7, 0.15' (N. James, 0.28-m Schmidt-Cassegrain)

C/2017 M4 (ATLAS)
Total-magnitude and coma-diameter estimates:
2017 Jul. 30.88, 17.2, 0.3' (K. Hills, 0.5-m Newtonian reflector)

C/2017 O1 (ASASSN1)
Total-magnitude and coma-diameter estimates:
2017 Aug. 22.21, 9.9, 4' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 19.72, 9.5, 6' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 19.10, 10.4, 4.5' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain)
2017 Aug. 19.05, 9.5, 5' (C. Harder, Jeersdorf, Germany , 0.252-m Newtonian reflector)
2017 Aug. 17.67, 9.9, 5.5' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 17.03, 9.1, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain)
2017 Aug. 16.98, 9.5, 6' (P. Guzik, 25x100 binoculars)
2017 Aug. 05.45, 9.8, 4' (C. Hergenrother, 30x125 binoculars)
2017 Aug. 04.13, 10.6, 2.3' (K. Hills, 0.5-m Newtonian reflector)
2017 Aug. 03.43, 9.6, 18' (T. Lehmann, 0.106-m refractor)
2017 Aug. 03.06, 10.0, 4' (M. Kwinta, Krakow, 0.185-m Newtonian reflector)
2017 Aug. 02.04, 10.2, 5' (P. Guzik, 25x100 binoculars)
2017 Aug. 01.81, 9.7, 10' (P. Camilleri, 0.08-m refractor)
2017 Aug. 01.74, 9.8, 7.5' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Aug. 01.23, 10.1, 4' (M. Goiato, 0.22-m Newtonian reflector)
2017 Aug. 01.10, 10.0, 1.7' (W. Hasubick, 0.44-m Newtonian reflector)
2017 Jul. 31.83, 9.8, 6' (M. Mattiazzo, Swan Hill, Victoria, Australia, 25x100 binoculars)
2017 Jul. 31.81, 9.5, 18' (T. Lehmann, 0.106-m refractor)
2017 Jul. 30.80, 10.4, 6' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 30.12, 10.1, 11' (C. Labordena, La Llacua, 0.2-m Schmidt-Cassegrain)
2017 Jul. 30.06, 10.4, 5' (U. Pilz, 16x70 binoculars)
2017 Jul. 28.77, 10.6, 8' (N. James, 0.43-m Ritchey-Chretien)
2017 Jul. 27.81, 9.6, 19' (T. Lehmann, 0.106-m refractor)
2017 Jul. 27.79, 11.0, 5' (P. Camilleri, 0.406-m Newtonian reflector)
2017 Jul. 27.23, 11.8, 3.6' (K. Hills, 0.5-m Newtonian reflector)
2017 Jul. 26.83, 10.2, 6' (P. Camilleri, 20x80 binoculars)
2017 Jul. 26.76, 10.9, 6.58' (N. James, 0.43-m Schmidt-Cassegrain)
2017 Jul. 25.83, 10.6, 5' (M. Mattiazzo, Swan Hill, Victoria, Australia, 25x100 binoculars)
2017 Jul. 25.77, 9.9, 9.6' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 25.76, 10.9, 6.4' (N. James, Nick James, Chelmsford, 0.28-m Schmidt-Cassegrain)
2017 Jul. 25.36, 10.3, 2' (A. Amorim, 0.18-m Newtonian reflector)
2017 Jul. 24.83, 10.5, 5' (M. Mattiazzo, Swan Hill, Victoria, Australia, 25x40 binoculars)
2017 Jul. 24.80, 10.8, 5' (P. Camilleri, Katherine - Northern Territory - Australia, 0.406-m Newtonian reflector)
2017 Jul. 24.78, 9.7, 20' (T. Lehmann, 0.106-m refractor)
2017 Jul. 24.76, 12.0, -- (G. van Buitenen, Siding Spring, MPC Q62, 0.43-m Ritchey-Chretien)
2017 Jul. 24.75, 10.0, 7' (C. Wyatt, 0.25-m Newtonian reflector)
2017 Jul. 24.36, 10.8, 2' (A. Amorim, 0.18-m Newtonian reflector)